Hauling scraper



Jan. 30, 1945 M. M. BROQERSEN HAULING SCRAPER Filed Feb. 11, 1941 5Sheets-Sheet l m m m.

Jan. 30, 1945.

BRODERSEN HAULING SCRAPER Filed Feb. 11, 1941 5 Sheets-Sheet 2 INVENTOR:

Jan 30, 11945. M. M. BRODERSEN HAULING SCRAPER Filed Feb. 11, 1941 5Sheets-Sheet 3 INVENTOR:

Jan. 30, 1945. M M. BRODERSEN HAULING SCRAPER 1.941 5 Sheets-Sheet 4Filed Feb. 11

INVENTOR:

Patented Jan. 30, 1945 Max M. Brodersen', Alhambra, Calif'.,,assignor toThe Sl'usser -M'cLean Scraper Companyq'Sidney; Ohio, at eorporation ofOhio Application February 11, 1941, Serial Not-378,397

6' Claims. (Cl. 37"'126) This invention relates to improvements in heavyduty hauling scrapers of the type shown.

in my Patents No. 2,220,472 and. No. 2,220,473 dated November 5, 1940,respectively.

The primary object of my presentinvention is to. provide a scraper witha bowl in which the back for saidbowl comprises a separate elementindependently mounted on the scraper frame and which is arranged to pushthe dirt out of the bowl as said'bowl is tilted. Thus a doubly effectivedischarge of the bowl is obtained becausein addition to dumping theearth by gravity upon tilting the, bcwllthe earth is forced out. of thebowl by positive mechanical means.

Another object is to provide the bowl with a back which is arranged sothat the earth ejecting action is effected simply by the tilting of thebowl without any application of motive power directly to the backelement.

.This arrangement permits a simple yet sturdy construction of a scraperin which the load may be positively ej ectedfrom the bowl with lesspower and a finer degree'of control than has heretofore been possible.

With these and other objects in view the invention consists in'thecombination, correlation and construction of parts;members-and-features' which will bedescribed in the-specificationandwill be finally pointed out'in-the claims.

Referring to the drawings:

Figure 1 is a plan view of the scraper'embodying-my invention.

Figure 2 is a-sectional elevation taken on-line 2-2 inFigure' 1, showingthe scraper in the digging position.

Figure 3 is a side-elevation of the scraper in the load carryingposition.

Figure 4 is asection similar to Figure 2 but showing the scraper in theload dumping and spreading position.

Figure 5 is adiagram illustrating the cable arrangement f or lifting thframe.

Figure 6 is a diagram showingthe bowl control cable arrangement.

Figure"! is-a diagram.-of thecable arrangement :for controlling'the bowlclosure.

The invention exemplifiedin: the; drawings in one oiitspractical.iormspo'f' embodiment includes a rectangular primary frame structure I0comprising a pair of spaced apart side elements H whicharesupportedatzthe rear ends on the outer ends of: axles l2 of:wheels.|3andarev rigidly eonnected at the .forwardaendsz-to across member; l4.

The cross member |1|:hascentrallyinterposed be:- tweenztheendsthereofaiorwardly extendingiand w:

downwardly depending. leg l5 whichis swivelably supported, as! at l6, ona wheeled carriage Thewheeled carriage l'l is. adapted for connection tothe draw bar of a tractor in the usual manner.

A. secondary frame structure l8, interposed between the side members ofthe primary frame, comprises a pair of spaced apart side plate members;l9 having a generally trapezoidal contour. The, side plates 18areirigidly connected at the forward ends to a tubular cross member 20and are supported at. the rear ends onthe aide l2, as at, I9a, adjacentthe outer sides or the wheels |3.

The rear ends of the'side plates l9v arev rigidly interconnected by afabricated frame work which includes a transverse cross member 2|.securely connected at the ends to said side plates. IS, a pair of spacedapart vertical arms. 22 which are centrally positioned and. securedatthe; lower forward corners to the. "cross member 2|, a cross member 23rigidly interposed between the right vertical arm 22' and side plate. l9respectively, a cross member 24' rigidly interposed between the leftvertical'arm 22 and side plat l9 respectively, a rearwardly extendingtriangular arm plate 25 positioned adjacent the inner side of the rightwheel l3 and. secured to the cross members 2| and 23 respectively and arearwardly extending triangular arm plate 26 positioned adjacent the.

inner side of ,theleft wheel l3'and secured to the cross members, 2| and24 respectively. Both arm plates, 25 and 26. are supported on the rightand leftaxle |2 as indicated at 25a and 26a respectively. A cross member21 is interposed between the arm plates 25 and 26 and carries rigidlysecured thereto the vertical arms 22'. The upper ends of the veiticalarms 22 are rigidly interconnected by a tubular cross member 28.

The side elements II are provided with upwardly extending brackets 29connected at the upper ends thereof toa tubular cross member 30, whichin turn has'secured thereto, intermediate itsends, a set of six spacedapart ears 3|. The ears 3| are inclined upwardly toward the rfrcnt andcarry at the-ends thereof a shaft 32 which in turn carries five sheaves33 journaled thereon in an interposed relation between said ears 3|.

The tubular cross'mem ber 20, between theiorward ends of side plates|9,'has secured thereto, intermediate its ends, a set of five spacedapart ears. The cars 34-are inclined upwardly toward the front and carryat the ends thereof; a:

lowerv rear corners of the shaft 35 which in turn carries journaledthereon three sheaves 36 interposed between the ears 34.

A cable 3'! anchored or dead-ended as at 38, is reeved between three ofthe sheaves 33 and two of the sheaves 36 and is then passed under asheave 39 journaled on shaft 40 between ears 4| on the cross member I4,over a sheave 42 journaled in bracket 43 on the leg I5, passed through aswiveled sheave 44 and connected to a suitable power controlled deviceon the tractor. See cable diagram in Figure 5.

By pulling and releasing the cable 31, vertical swinging movement isimparted to the secondary frame l8 about the axles l2 of the rear wheelsl3 thereby raising and lowering the implement.

A bowl 45 comprising a bottom 46 and side plates 41 is disposed betweenthe side plate members l9 and is supported at the forward end on a pairof links 48. The links 48 are pivotally connected at their lower ends tothe bowl side plates 41, as at 48, and at their upper ends to the frameside plates l9, as at 50. The'upper rear corners of the bowl side plates41 are rigidly connected to a cross member The forward edge of the bowlbottom 46 is provided with the usual scraper blade 52 and the rear edgeis curved upwardly as shown at 53. The lower rear corners of the bowlare provided with rearwardly extending brackets 54 each of which carriesjournaled at the ends thereof a roller 55. The rollers 55 are guided invertical channels 56 which are secured to the inner surfaces of theframe plates IS.

The bowl is provided with a rear end gate or back element 51 which ispivotally supported on the frame side plates l9 by means of lugs 58 atthe upper corners of the back element which lugs in turn are pivotallymounted on pins 59 extending inwardly from said frame side plates.

The curved rear edge 53 of the bowl bottom 45 is provided with a pair ofears 60 which support a shaft 6| having journaled thereon a sheave 62.

The tubular cross member 28 between the vertical arms 22 is providedwith a. set of four forwardly inclined ears 63 carrying a shaft 64 atthe ends thereof on which are journaled three sheaves 65.

A cable 66, anchored as at 61, is reeved between two of the sheaves 65and the sheave 62 on the bowl and is then passed over one of the sheaves33 on the tubular cross member 30, under a sheave 68 journaled on theshaft 40 between a pair of ears 69 on the cross member [4, over a sheavejournaled in a bracket H on the leg l5, passed through a swiveled sheavel2 and connected to a suitable power controlled device on the tractor..See Figure 6.

By exerting a pulling force on the cable 66the rear end of the bowl 45is raised vertically, by virtue of the guide rollers 55 in the verticalchannels 56, which causes the forward end of the bowl to swingrearwardly on the links 48 thereby tilting the bottom of the bowl todischarge the load, as may be observed in Figure 4. Stops 13 and 14 areprovided at the upper and lower ends, respectively, of the channels 56to limit the raised and lowered positions of the rear end of said bowl.

To discharge the load the bowl is tilted in the manner described aboveso that the dirt is dumped by gravity. However, in order to aid gravityin discharging the bowl the back element 51 is actuated by the tiltingmovement of the bowl to eject or push out the dirt. Thus a moreeffective and complete discharge of the bowl is obtained than ispossible by simply tilting the bowl, particularly in moist or clayishsoils. Furthermore, the combination of positive ejection with thegravity discharge facilitates more effective discharge with less powerthan was possible in scrapers having a power operated end gate forpushing out the dirt out of a rigid or non-tilting bowl.

In Figures 2 and 3 which illustrate the digging and carrying positionsof the bowl respectively, it will be seen that the lower edge 15 of theback 51 overlaps the edge of the curved portion 53 of the bowl bottom toretain the back from swinging outwardly from said bowl. The cross member5! holds the back against swinging into the bowl during the diggingoperation.

Upon discharging the load, the initial tilting movement of the bowlstarts swinging the cross member 5| away from the back while at the sametime the curved portion 53 of the bowl bottom I starts camming the backinwardly to force the dirt out. When the edge 15 reaches the end of thecurved portion 53, the bottom 46 is at a sufficient angle to continuethe inward camming of the back while the bottom 46 swings up behind theback into the fully tilted position shown in Figure 4. The frictionalcontact of the back edge 15 against the bottom 46, during the cammingoperation, scrapes the bottom cleanly of all adhering olods of dirtthereby effecting a complete discharge.

A closure 16 is provided for the receiving end of the bowl to retain theload during transportation. The closure 16 includes a pair of arms llwhich extend rearwardly and are pivotally supported at their rear endson the side plates l8, as at 18. The closure 16 is provided with a pairof forwardl extending lobes I9 which carry interposed therebetween asheave 80 journaled on a shaft 8|.

A cable 82, anchored at one end on the cross member I4 as at 83, ispassed under the sheave 80, over one of the sheaves 36 on the crossmember 20, over one of the sheaves 33 on the cross member 30, over oneof the sheaves 65 on the cross member 28, under a sheave 84 journaled ona shaft 85 supported between the vertical arms 22 and anchored at theother end on the sheave shaft 6| at the back of the bowl bottom.

The bowl closure 16 is controlled by the tilting of the bowl 45 and bythe raising and lowering of the secondary frame l8. Figure 3 shows theimplement in the load carrying position wherein the bowl is raised abovethe ground surface. The cable 82 is just long enough to support theclosure 16 in the closed position at the receiving end of the bowl toprevent spilling of the dirt during transportation. In discharging thedirt, the bowl is tilted as shown in Figure 4 wherein the cable 82 ispulled by the elevation of the rear end of said bowl to raise or openthe closure 16. In the digging position as shown in Figure 2, theclosure 76 is lowered into the closed position upon lowering the rearend of the bowl, then when the frame I8 is lowered to bring the bowlinto the digging position the receiving end of the bowl drops away fromthe closure providing an opening for admittance of the scraped upmaterial. Upon completing the scraping operation the loaded bowl issimply raised up to the, closure.

Having thus described my invention I claim:

1. An earth moving machine comprising a primary frame structure, frontand rear wheeled carriages for supporting said primary frame, asecondary frame supported at its rear end on the rear wheeled carriage,cable power means associated with the ,front end of said secondary frameand said primary frame for imparting vertical swinging movement to saidsecondary frame, a bowl, link means for supporting the front end of saidbowl on the secondary frame, means connecting the rear end of said bowlto said secondary frame to guide said rear end for vertical movement,cable power means associated with the rear end of said bowl and saidsecondary frame for imparting vertical movement to the rear end of saidbowl and thereby causing rearward movement of the front of said bowlthus tilting the bottom of said bowl, a rear end closure for said bowl,pivotal means at the top of said end closure for swingingly supportingsame on said secondary frame, said end closure being arranged so thatits bottom edge cooperates with the bottom of said bowl to swing theclosure into the bowl upon tilting of said bottom thereby ejecting theearth from said bowl.

2. An earth moving machine comprising: a frame structure, a bowl, linkmeans supporting the forward end of said bowl on said frame structure,means connecting the rear end of said bowl to said frame structure toguide said rear end for vertical movement, cable means associated withthe rear end of said bowl and said frame structure for impartingvertical movement to the rear end of said bowl thereby causing rearwardmovement of the forward portion of said bowl and thus tilting the bottomof said bowl, a rear end closure for said bowl, pivotal means at theupper portion of said end closure for swingably supporting same on saidframe structure, the lower edge of said end closure operatively engagingthe bottom of said bowl to swing said end closure into said bowl upontilting of said bottom thereby aiding in ejection of earth from saidbowl.

3. A hauling scraper comprising: a frame structure, a bowl comprisingbottom and sides in fixed relationship, links swingably suspending saidbowl from said frame structure and a vertically shiftable connectionbetween the rear of said bowl and said frame structure, means forshifting said connection to elevate the rear end of said bowl, and arear gate pivotally supported on said frame structure and engageable bysaid bottom to swing said gate relatively forward into said bowl whensaid bowl is tilted for dumping.

4. An earth scraper including a frame structure, a bowl tiltably mountedon said frame structure, a rear end closure for said bowl pivotallysupported at its upper end on said frame structure and adapted to stoprearwardly against an element on the lower portion of said bowl, andmeans on the upper portion of said bowl engag ing said end closure tohold the latter against said bowl element when said bowl is in earthcollecting or retaining position, said means shifting away from said endclosure to free the latter when said bowl is in tilted dumping position.

5. An earth scraper including a frame structure, a bowl tiltably mountedon aid frame structure, a rear end closure for said bowl pivotallysupported at its upper end on said frame structure and adapted to stoprearwardly against an element on the lower portion of said bowl, meanson the upper portion of said bowl engaging said end closure to hold thelatter against said bowl element when said bowl is in earth collectingor retaining position, said means shifting away from said end closure tofree the latter when said bowl is in tilted dumping position, and thelower edge of said end closure co-operating with the lower portion ofsaid bowl to force said end closure into said bowl when the latter istilted to dumping position.

6. An earth scraper including a frame structure, a bowl tiltably mountedon said frame structure, a rear end closure for said bowl pivotallysupported at its upper end on said frame struc-' ture and adapted tostop rearwardly against an element on the lower portion of said bowl,means on the upper portion of said bowl engaging said end closure tohold the latter against said bowl .element when said bowl is in earthcollecting .or retaining position, said means shifting away

